Automatic stop mechanism for paper-sheet-handling machines.



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PATENTED DEC. 31, 1907.

B. GUSTAFSON. AUTOMATIC STOP MECHANISM FOR PAPER SHEET HANDLING MACHINES. APPLICATION FILED JAN. 26. 1906.

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PATENTED DEC. 3l, 190?.

E. GUSTAESON. AUTOMATIC STOP MEGHANISM FOR PAPER SHEET HANDLING MACHINES.

APPLICATION FILED IAN. 26, 1906.

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PATENTED EEG. 31.1907.

A E. GUsTAEsoN. AUTOMATIC STOP MEGHANISM PoE-PAPER sEEET HANDLING MACHINES.

- APPLICATION FILED JAN.2e,19oe.

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No. 875,260. PATBNTED DEO. 3,1. 1907` B. GUSTAPSON. AUTOMATIC STOP MECHANISM FOR PAPER SHEET HANDLING MACHINES.

AYPIIICATION FILED IAN. 26. 1906..

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PATENTED DBC. 31l 1907.

B. GUSTAFSON. AUTOMATIC STOP MECHANISM POR PAPER SHEET HANDLING MACHINES.

APPLICATION FILED JAN. 26,1906.

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PATENTED DEC. 81, 1907.

B. GUSTAP'SON. AUTOMATIC STOP MEGHANISM POR PAPER SHEET HANDLING MACHINES.

APPLICATION FILED JAN. 26. 19.06*

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PATENTED DEC. 3l, 1907.

E, GUsTAPsoN. AUTOMATIC sToP MECHANISM TOE PAPER SHEET HANDLING MACHINES.

' APPLICATION FILED JAN. 26. 1906.

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. UNTED STATES' v PATENCI?. OFFICE.-

RERNHARD eUsT-ArsoN,l or lOsToN, MASSACHUSETTS, AssIeNORTo THE UNT-TED PRINTING MAOHINERY COMPANY, or BOSTON, MASSACHUSETTS, A. CORPORATION or MAINE.

AUTOMATIC STOP MECHANISM FOR PAPER-SHEETHANDLING MAGHIN'ES.

To all whom 'it may concern:

Be it known that I, BERNHARD GUsTAF- sON, of Boston, in the county of Suffolk and State -of Massachusetts, have invented certain new and useful Improvements in Automatic Stop Mechanism for Paper-Sheet-Handling Machines, of which the following is a specification.

This invention relates to an improvement in automatic stop mechanism for paper sheet handling machines. v

. Figure 1, in side elevation, shows a part of the framework of a paperfsheet feeding apparatus with my automatic stop mechanism arranged thereon, the sheet detectorfinger and buckling hook showing `in side elevation, the buckling detector-linger and the sheet tri p-iinger not being shown; in this view also appears the connection between the power devices of the machine and the intermediate devices controlled by the trip-fingers. Fig. -2 is a top plan view of the parts as illustrated in Fig. 1, showing the connectingfrod by which motion is imparted to the cranksthat operate the detector-fingers, this view also showing the two -sheet .detector-fingers in l their pro er relation with reference to the press gui es Fig. 3, in side elevation, shows .the connection between the automatic stop mechanism immediately under controlof the trip-fingers an d the trip and brake levers, the

latter also being shown as connected to the usual treadles. Fig. 4, in side elevation, shows the delivery end of the feeding mech- `anismhaving my automatic stop mechanism i arranged thereon, the printing cylinder being 1 shown diagrammatically, and the buckling the action of the buckling detector-finger.

Fig. 5, in side elevation, shows the buckling i hook, its tripping crank, and the means con- .trolled by the buckling 4detector-finger for maintaining the buckling hook in .an inopen ative` position, or the osition occupied by the parts when a sheet. elivers properlv from the cylinder and does not buckle. Fig. 6 is alike .view with .some of the parts removed.

Fig. 7. is a view similar to Fig. 4, showing the sheety detectOr-ingerin engagement with a' sheet of paper, thelatter being properlykpositioned upon the tongues and against ,the press guides.

4view on theline 8-8 of 7'., looking in the .direction of the arrows, showing the sheet Specification of .Letters` Patent.

Fig. 8 is a horizontal sectional Patented Dec. `311., 19.07.

Application filed January 26.1996. Serial No. 298.071..c f

detector-finger arranged between the two l' spring iingers of the ress guides, and over a) s ot in the tongues o the machine. Fig. 9 is a detailed view showing one of the spring fingers of the press guide, the end of the sheetdetector-finger resting upon a sheet of paper, the sheet of. paper being properly positioned upon the tongue and against the press guide. Fig. 10 is a detail view showing the position assumed by the sheet detector-finger and the sheet trip-finger, when a sheet o fpaper fails to be positioned upon the tongue and against the 'press guides. Fig. 11 is a detail view showing the sheet detector-finger, the pQSif tion it occupies when asheet fails to register, theend of the finger being in a s lot ofthe tongue, the finger resting upon the plateand with its. shoulder in operative engagement with the sheet trip-finger. Fig. 1'2 1sl across? sectional view on the line '121.512 of Fig. 6, looking in the direction of thearrow, show- -ing lthe manner of l'mounting the rear end of the sheet detectOILlng'ers and the bucklingy hook. Fig. 13 isa sectional view on the line 13-13 ofl Fig. 6, showing the block that carries the rear end of a-sheet detectorer over the buckling hook.

The eneral framework on cylinder 2, delivery gers 3 (Fig, 4),'the plate 4, tongue 6, rod 6,r supporting the lower end ofthe plate and the rear end of the tongue, the press guides 7, ,7, the rod 8 on which said press guides are supported, the guide-plate 9, the guide-fingers 10, 10 (Fig. .8), the brake lever 12 and .its treadle rod 13, the trip lever 14 and its treadle rod 15 may be, and as here l shown, lare of the common and .well known A vdetector-finger shown as raised to effect the j l' v automatic stopping ofthe machine through form and arrangement, The mechanism for feeding sheets of paper is not shown, nor 1S -the mechanism for operating `the printing cylinder, these mechanisms forming no part of my invention.

While have Shown my invention connected with a printing cylinder, I do not wish to be understood as limiting the field 1.00

of my invention to said art, since itmight be employed and is intended to be .em loyed in any relation where the handling an ,regisP tering of. sheets of paper is desired.

' Re' e.

rring to Fig.I 3, .20 represents a bracket L05 connected. with the lower Ortion of the framewo'knear the free .en s of the levers 12, 14. 21 represents a lever pivoted' to the bracket 20. One end of Vthis lever 21 is formed with a series of holes 22. @2,3 repre- 110 sents a chain having itslower end connected to a pin arranged in one of the holes 22, and having its o ther end secured to a lug 24, ad-

justably secured upon the rodl1'3. 25 reprei detent lto maintain the rod 35 in the position sents a chain having its lower endwconnected to a piny arranged in :one of the holes 2.2, while its upper end is secured to a lug 24 adjustably mounted on the rod 15. By this arrangement as the left v-hand end --of the lever in Fig. 3 is depressed, the rods 13 and 15 will likewise be depressedt-he same way as if they had been depressed, by the foot of the operator in the ordinary way to apply the brake or operatel the trip, as the case` might be. 27 (Fig. 3) represents a rod, the lower end of `which is connected with one arm of the lever 21, the upper end of this rod being connected with the horizontal arm of a bell cranklever 28, pivoted at its angle upon the framework. 29 (Fig. 1) represents the handle of a conventional brake switch 30 secured on the framework to one side of the bell-crank 28. 31 (Fig. 1) re resents a rod ivoted to the vertical arm o the bellcran 28 and formed upon its free end with a hook-shaped member 32, adapted to engage the handle 29 of the brake switch in order to pull said handle to the left (Fig. 1) to breakthe circuit, or to stop the machine inoases where an electric motor is used for driving the machine. Where other forms of power are employed instead of the brakeswitch handle 29 any movable form of shipper lever or equivalent device may be employed and connected up to the bell-crank 28 in any desired way.

Referring to Figs. 1, 3, and 5, 33 and 34 represent two lugs formed on the framework of the machine in advance 'of the position occupied by the bell-crank 28. These lugs are perforated and slidingly arranged in said lugs'is a rod 35. 35a re resents a handle rigidly secured to the ro 35 (Fig. .2), by which means said rod may be operated to position the latter after it has been moved y the spring hereinafter described. 36 represents a coiled s ring, one end of which is connected to the ug 34 in any desired way,

the other end of'said spring'being connected to a lug 37 fast on the rod 35, the spring tending to throw therod 35 to the left. (Fig. 1) 38 represents a rod, one end of which is pivoted to the rear end of the rod 35, while the opposite end of the rod 38 is pivoted to the` vertical arm of the bell-crank 28.

It will be clear from the fore oing that a movement of the rod 35 to theeft (Fig. 1) would operate the bell-crank 28, not only to shut off the power from the machine, and thus act as a stop, but also to operate the trip lever 14 and the brake-lever 12. If desired, of course, the rod 31, or the connection of the lever 21 with either of the rods 13 or 15 could be omitted.

39, (Figs. 1, 3, 4, and 5) represents a lugV formed upon the framework adjacent to the lug 34. The lug 39 is perforated, and in such perforation is arranged a short rod 40, the ower e'nd of which is adapted to act as a shown in Fig. 5 against the tension of the spring 36. When, however, as hereinafter described, the rod 40 is pulled up from the position shown in Fig. 5, to the Vposition shown in Fig. 10, to clear the' end of the rod 35, the spring 36 draws the rod 35 to the left,

as shown in Fig. 1, to the position shown in Fig. 10, thus operating the automatic stop and levers of the brake and trip mechanisms. Brackets, (Fig. 1) are sup orted upon the framework back of the be l-crank 28, and.

formed with suitable bearings in which is arranged a shaft 51 adapted to be connected up and driven in any desired way.

52 represents a cam fast on shaft 51 formed with two throws 53 and 54.

55 represents a lever pivoted at its lower end to the framework in the rear of the cam 52. The lever 55 carries a roll 56 adapted to engage the cam 52.

91 represents a rod pivoted at its rear end to the free end of the lever 55. The front end of the rod 91 carries a bolt 57 adjustably positioned in a slot 58 formed in the end of the lever 59 mounted upon a shaft 60, the ends of which are arranged inl suitable bearings in brackets 63, projecting upwards from the framework. The shaft 60 carries a spline or rib 61, which serves as a means by which the hub of the lever 59 is locked about the shaft. A coil spring 62 is arranged on the shaft 60, .one end of said spring being secured to the framework, the other end of said spring being secured to the hub of the lever 59. This spring serves to keep the roll 56 (Fig. .1) in engagement with the cam 52, the action of the spring 52 being to turn the shaft 60 (Fig. 2) in a direction opposite to that of the travel of the hands of a watch.

70, 71, and 72 represent three hubs rigidly mounted upon the shaft 60. (See Fig. 2). The hub 72 carries a lever 73 that carnes at its lower end the buckling trip-finger, hereinafter described. (Figs. 5 and 6.) The lhubs 70 and 71 carry levers 80, and 81, respectively. The hubs 70 and 71 and the levers 80 and 81 are duplicates of each other. The lever 8() carries at its lower end a sheet de tector-finger, hereinafter described. In Fig. 2, the arrangement of the two hubs and the two companion sheet detector-fingers, and their relative arran ement to the two press guides 7 and 8 is c early shown. The construction of the two sheet detector-fingers is identical, and the description of one will suffice for both, it being understood that one is a duplicate of the other, and that both are operated simultaneously.

Referring to Figs. 7, 8, 9, 10, 1l, 12, and

h.125, 100 represents what I term a .sheet detectpr-iinger, the same as shown comprising a rod, the free end of which is formed with a hook-shaped member 101, adapted to engage a sheetl of paper 16 between the fin ers 10 of the press guide and just in front of t 1e guideplate 9. The said hook-shaped member 101 being adapted when a sheet of paper is not present to fall ina slot 5 in the tongue 5u carried by the plate 4. (See Fig. 11.) The sheet detector-nger 100back of the hookshaped member 101, is formed with a shoulder 102 adapted for engagement with the sheet trip-finger, hereinafter described.

The end of the lever y80 of thehub 70 is formed as a hub l82.

83 represents a bolt loosely arranged in the hub 82, so as to permit the bolt to turn in the hub. The bolt upon one side is formed with a block 84, which in effect constitutes the head of the bolt.

85 represents a nut. In the arrangement as shown in Fi 13, the nut 85 is arranged upon one side o the hub 82, while the head or block 84 is arranged on the other side of the hub 82. By this means the block 84 is properly positioned against the hub 82 and held in place, although at the same time the bolt 83, as well as the hub, is free to oscillate. The rear end of each detector-finger 100 is formed as a screw-threaded rod 86, and arranged-in a suitable aperture in the block 84. (See Fig. 13.) A spline 87 arranged in the block, and the rod 84 serves to maintain said rod 86 and the detector-finger against turning.

88 and 89 represents two adjusting screws mounted upon the rod 86 on either side of the block 84.k By means of the screws 88 and 89 the rod 86 may be adjusted in and out of the block 84, and thereafter rigidl secured to block 84, secured against en wise displacement. By the described construction the sheet detector-finger 100 can be moved back and forth by means of the lever 80. At the same time the sheet detector-l finger 100 can have an up and down movement for the purposes hereinafter described, due to the swiveled connection of theblock 84 with the hub 82.

120 represents a shaft rigidly mounted at its ends in the brackets 121, (Figs. 2 and 10), the shaft 120 being just in advance of the shaft 60.

122 (Figs. 2, 4, 5, 6, 7, and 10) represents shaft having its ends arranged in suitable bearings in the brackets 121, and being positioned in advance of the shaft 120.

123, 123 represent two hubs fast on the shaft 122 and'locked to said shaft by means of a spline 124% These hubs 123 are duplicates, there being one adjacent to each detector-finger 100. Each hub 123 carries an arm 126 formed at its front end with a socket in which is arranged a flat bar 127,

(Figs. 7, 10, and 11). A set-screw 128 eX- tends through the wall of the socket part of the lever 126 and is arranged in a slot 130 in the flatbar 127, thus screwing the bar in any desired position of adjustment in the socket. The bar forms a part of the lever, and the l above construction permits the len fth of the lever to be changed if desired. T e end of the bar 127 is formed with an outwardly turned portion or lip 129 that lies immediately beneath its complement-al detectoriinger 100 and arranged to be engaged by the shoulder 102 and the detector iinger'when the parts assume the position shown in Figs. 10 and 11. The lever 1,26 and its parts con- -stitute what I term a sheet trip-finger.

131 (Figs. 2, 5, and 10) represent a short crank-arm secured to one end of the shaft 122 just outside of the bracket 121.

132 represents a hub loosely mounted to. the end of the shaft 120 outside the bracket 121. A lever 133 formed upon the hub 122 is pivoted at its free end to the crank-arm 131 by a pin 134, so that motion imparted to the shaft 122 by means of a movement given by the sheet trip-fin er 127 will be transmitted to the hub 132 t ough the connection of the crank-arm 131 and the lever 133, thereby lifting the rod 40, the latter being pivoted at its upper end to a lever 135 carried by the hub 132, (see Figs. 1, 2, 3, 4, 5, and 10). The end of lever 73 (see Fi s. 5 and 6) carries a block 143 like the bloc( 84 shown in Fig. 13, (see Figs. 5 and 6)..

hook, the rear end of which is formed with a screw rod 141, arranged in the block 143, in the end of the lever 73, the rod 141 being secured in any desired adjustable position by means of the nuts 144, 144. The front end of the buckling-hook 140 is formed with an incline 145 terminating in a shoulder 146, corresponding with the shoulder 102 on the sheet detector-finger 100, adapted to be engaged, as hereinafter described, by a pin 147 secured to the end of a lever 148, carried by a hub 149 on the shaft 122, (see Fig. 2).

150 represents a coiled spring arranged on the shaft 122, one end of said spring being secured to the bracket 121, the other` end of the spring being secured to the hub 149, said Vs ring acting to turn the shaft 122 in the direction of the hands of a watch, (see Figs. 2and 5), thus acting to maintain the rod 40 in position asa detent.

160 represents a hubl secured on the shaft 120 in the rear of the hub 149, (see Figs. 2, 4, and 6). The hub 160 is formed w1th a downwardly projecting arm 16'1, on the lower end of which is pivoted a bell-crank 162. The horizontal arm of this bell-crank carries a pin 163 arranged below, and adapted to engage the under side. of the bucklinghook 140 to normally maintain said hook in sov ' the position shown in Figs. 5 and 6, where its shoulder 146 will be out of the plane of the pin 147 of the lever 148.

170 (Figs.v 2, 4, and 7) represents ashaft arranged 1n suitable bearings in the framework. This shaft is arranged above the cylinder 2 below the press guides 7 and between the rod 8 and the plate 9 of the press guides.

171 represents a lever rigidly secured to the shaft 170, and carrying at its free end a pin 172.

173 represents a bar, the front end of which is formed with a notch arranged upon a pin 172. The rear end of this bar is formed with a slot 174 in which is arranged an adjustabl pin carried by the vertical arm of the bell'- crank 162. This provides means for adjusting the parts to the machine. The bar 173 and the parts carried by shaft 17 0 serves to maintain the pin 163 of the bell-crank 162 in its raised position, and in the position shown in Fig. 6, where it serves to keep the buckling-hook 140 raised with its shoulder 146 above and out of the plane of the pin 147 of the lever finger 148.

176 represents a seri s of collars rigidly secured to shaft 170. here may be one or more of such collars, as desired, the exact number depending upon the form and arrangement of the machine and the work to be done. Each collar 176 carries a lug 177, to which is secured a long spring or arm 178, that extends adjacent down the delivery fingers 3, standing over a space between said fingers, (see Fig. 7). The springs or parts 178 I term the buckling detector-finger or fingers, there being two such fingers shown, (see Fig. 2), although, as stated, any desired number may be employed.

The operation of my improved apparatus is as follows: Assuming the machine to have stopped, the operator, by means of a handle 35a, draws back the rod 35 from the position shown in Fig. 10, to the position shown in Fig. 1, thus permitting the rod 40 to be forced down in front of the end of the rod 35 to act as a detent. This downward move ment of the rod 40 is occasioned by the action of the spring 150, (Fig. 2), whose normal tendency is to turn the short crank 131 (Fig. 5) in the direction of the hands ofa Watch, thus lifting the lever 133 and depressing the lever 135 and the rod 40. This movement of the rod 35 raises the brake lever 12, trip-lever 14 and applies power to the machine, some other power connection device. The sheets of paper 16, or other material, are fed over the plate 4 by any suitable or desired mechanism, passing from the tongues 5 to the printing cylinder 2, about said cylinder,

land thereafter being delivered by said cylinder on to the delivery fingers 3. If the sheets of paper are properly fed, approach' the press guides at the plate 9 at the proper?,

\ time, pass about the cylinder 2 and deliver 'evenly upon and freely pass over the delivery fingers 3, the operation of the machine is not interfered with by my apparatus.

Referring to Figs. 1 and 2, the cam 52 gives the rod 91 two reciprocations, one by means of the throw 54, and the other by means of the throw 53, the latter being shorter than the former, thus giving to the shaft 60 corresponding move'ments. The greater or longer movement of the shaft 60 occurs when the sheet is being presented at the guidelate 9, the shorter of said movements ta ring lace when the sheet is passing from the cylinder 2 to the delivery fingers 3. Thisdescribed movement of the shaft 60 gives to each of the detector-fingers 100 and to the buckling-hook 140 (Fig. 2) a simultaneous short and long reciprocation, these parts moving simultaneously as they are all carried by levers fast upon the shaft 60. The buckling-hook 140 rides on the pin or roll 163. The hook-shaped member of the sheet detector-finger 100 at the time the sheet 16 should be against thev guideplate 9, moves downward from a position over the plate 4 over a slot 5 in the tongue 5a to the pomt shown in Fig. 9. If, -during the movement of the part 101, the sheet of paper 16 is positioned against the guide-plate 9, said sheet will maintain the part 101 at the point shown in Fig. 9 and prevent its dropping in the slot 5 in the tongue 5a. This movement of the hook-shaped member 101 and its reverse movement is occasioned by the long reciprocation of the rod 91 brought about bythe throw 54 of the cam 52. The short throw of the rod 91, or the throw that takes place while the sheet of paper is'passing from the cylinder to the delivery fingers 3, while sufficient to bring the shoulder 146 in front of the in 145 (Fig. 4) is not sufficient to bring the ook-shaped member 101 below the end of the plate 4, so that at this operation the hook-shaped member 101 does not move forward far enough to drop between the tongues 5a. of paper 16 is not at the guide-plate 9 at the proper time, the hook-shaped member 101 will drop'in a slot 5 in the ton ue 5a, (see either by the brake-switch 30, orL

Fig. 11), thus bringing its shou der 102 in the path of the lip 129 of the sheet trip-iinger, and upon the reverse movement of the sheet detector-ingerlOO the sheet trip-finger will be pulled to the rear, or to the position shown in Fig. 10, thus turning the shaft 122 in a direction o posite to that of the hands of a watch, an against the tension of the spring 150, operating the crank 131, levers 133 and 134, raising the pin 40, permitting the spring 36 to throw the bar 35 to the left, as in Figs. 1, 5, 6, 7, and 10, operating the brake-switch, tripping the cylinder, operat ing the brake and stopping the machine. Referring now to the buckling feature of If for any reason the sheet the machine, as long as the sheets are deliv- 'i properly at this point, as shown in Fig. 4,

this buckling action ofthe sheet engages one or more of the springs or arms 178, raising them, thereby turning the shaft 170 and throwing the levers 171 to the rear, (see Fig.

This action `moves the bar 173 rearwardly (Fig. 4) dropping the roll-pin -163 down out of' engagement with the bucklinghook 140, and dropping it in the path of and in position to engage the pin 147 of the lever 148, so that upon the reverse motion of the buckling-hook the lever 148 will be pulled to the right (Fig. 4) turning the shaft 122 in the direction opposite to that of the hands of a Watch, thereby operating the crank 131, the levers 133 and 135 lifting the detent pin or rod 40 to the position shown in Fig. 10, and thereb operating the trip, brake, and cutting o the power. It will be seen that the buckling detector-fingers and sheet detectoringers act independently of each other to bring about the operation of the lever 148 upon the happening vof the conditions stated. The unequa movements given to the shaft 60 permits-a sucient operation of the buckling-hook 140 to be engaged by the pin 147 at both movements; the longer movement permitting the positioning of ,the hook-shaped member 101 to the point shownin Fig. 9, at the time when a sheet 16 should register at the guide plate 9, andthe shorter movement of said part 101 occurring at the time when a sheet 16 is being delivered upon the delivery fingers 3, such short movement being suiicient to permit the shoulder 146 of the buckling-hook 140 to pass beyond the pin 147 on the lever 148. At this time the hook-shaped member 101 does notpass beyond the end of the late 4, so that there is no liability of the mac 'ne being stop nger at the time o from the cylinder.

It will be noted that the lip 129 on the bar 127 that is engaged by the shoulder 102 and the detector-finger 100 is entirely distinct and independent from the in 147 and the lever 148 that are yoperated y the bucklinghook 140. The lip 129 being flat, after said lip is drawn back sufficiently to give the desired movement to the rod 40, the right hand edge of said lip by its engagement with the under side of the trip-iinger, will raise the shoulder 102 out of engagement with the left livery of the sheets hand edge of the lip (see Fig. 11), thus permitting the li 129 to return to its initial position, and aso serving to lift the end 101 clear of the rear wall of the slot 5.

Having thus explained the nature of my invention and described a Way of constructed bcy the sheet detectorthe e attempting to set forth all of the forms in Which it may be made, or all of the modes of its use, what I claim and desire to secure by Letters Patent is1 l. In a printing-machine, a press-guide,-

a sheet-handling mechanism, automatic means for stopping the machine upon the failure oi' the machine to present a sheet at said guide, automatic means for stop ing 'the machine upon the buckling of a s eet being delivered from the cylinder, and provisions whereby thev first mentioned means are rendered inactive during the delivery of the sheet from the printing cylinder.

2. In -a printing-machine, a press-guide, an impression cylinder, an automatic stop or release, means for maintaining said stop inactive, a device connected to said means and adapted to be rendered inoperative by a sheet of paper at said guide, and a part connected to said means adapted to be operated by the buckling of a sheet of paper, at the delivery fingers.

3. In a'- printing-machine, a press-guide, an impression cylinder, an automatic stop or release, means for holding said stop inactive, a device connected to said means and adapted to be rendered inoperative by a sheet of paper at said guide, a part connected to said means adapted to be operated by the buckling of a sheet of paper at the delivery ngers, and provisions whereby said device 1s rendered inoperative when a sheet of paper is passing said part.

4. In a printing-machine, a press-guide, an impression cylinder, an automatic stop,

means fo'r holding said stop inoperative, a

finger connected to said means adapted to be moved to said guide at predetermined times, and to drop through .a slot, unless plevented by a sheet of paper, a second ger connected to said means arran ed at the delivery side of the cylinder, anda apted to be operated by the buckling of a sheet of paper.

5. In a printing-machine a press-guide, a slidable bar, connected to the trip-levers of the press, a spring for moving said bar in one direction, a sto arranged to engage the end of said bar and old the latter against the tension of said s ring, a normally stationary lever, connecte to said stop and'carrying a lip, and a reci rocating finger, the end of' which is adapte to engage a sheet of paper at said guide, said inger being arranged to slide on said lip, and being formed with a shoulder, arranged to engage said li to.

65 ing and using the same, though Withoutneciprocating finger, the end of which is 130 arranged tengave a sheet of paper at the press guides,-an .means upon said linger .ada ted. to .operate said 1ast-mentioned mecianism when said iinger is not sustained by ashect of-:pape'r at the pressgui'des.

7 In a pIinting-machine, a pressuide, an automatic ,trip-mechanism, a stop or holding said. mechanism inactive',` a reciprocating finger, the end' of which is arranged to be sustained=by.'ajs`lieet of'paper at said guide, y

normally stationary means connected to said stop, .com rising a part, over which saidiinger f sli es, .a member upon said iinger'arranged-to engage said part, Whensaidinger is not sustained by a sheet of paper at-the press-guidesLsaid part being.

t the member of said finger arranged to li clear of said part, after' the latter has been drawn backa predetermined distance.

signature, in presence of two witnesses.

BERNHARD GUSTAFSON.

Witnesses:

WILLIAM QUINBY, H. L. ROBBINS. 

